I can sympathise with all the previous posts, I cared for my father until he passed away, and he turned from a very mild mannered man to a cantankerous so and so.
Also he would think the world of anyone who came to see him once in a blue moon, but his attitude towards me turned quite vicious, and I was the daily carer.
I tried to understand his illness, but when you can do no right, it gets very frustrating.
Other family members including my brother and the grandchildren thought he was, 'doing very well'.........but they only visited occasionally.
I kept all my opinions to myself and the wife,...basically to keep the family peace.
Luckily I can remember the good times with Dad, he was a grafter and a good family man, and that's how I want to remember him.
All the best.